- Supports and Surface Chemistries

2013 ◽  
pp. 74-119
Keyword(s):  
Surface Chemistries

scholarly journals Hydrogel-Mediated Direct Patterning of Conducting Polymer Films with Multiple Surface Chemistries

2014 ◽  
Vol 26 (18) ◽  
pp. 2782-2787 ◽  
Author(s):  
SooHyun Park ◽  
Guang Yang ◽  
Nrutya Madduri ◽  
Mohammad Reza Abidian ◽  
Sheereen Majd
Keyword(s):  
Conducting Polymer ◽  
Polymer Films ◽  
Direct Patterning ◽  
Surface Chemistries ◽  
Conducting Polymer Films

The use of dynamic surface chemistries to control msc isolation and function

Biomaterials ◽  
2011 ◽  
Vol 32 (21) ◽  
pp. 4753-4760 ◽  
Author(s):  
J.M. Curran ◽  
F. Pu ◽  
R. Chen ◽  
J.A. Hunt
Keyword(s):  
Dynamic Surface ◽  
And Function ◽  
Surface Chemistries

Modification of Polymeric Surfaces With Plasmas

MRS Bulletin ◽  
1996 ◽  
Vol 21 (8) ◽  
pp. 43-45 ◽  
Author(s):  
Don M. Coates ◽  
Stephen L. Kaplan
Keyword(s):  
Surface Preparation ◽  
Polymeric Materials ◽  
Polymer Surfaces ◽  
Surface Coatings ◽  
Daily Lives ◽  
Polymeric Surfaces ◽  
Capacitively Coupled ◽  
Rf Plasmas ◽  
Plasma Treatments ◽  
Surface Chemistries

As adaptable as polymeric materials are in their many applications to our daily lives, the need exists to tailor the polymer surfaces to provide even more flexibility in regard to their uses. Plasma treatments offer an unprecedented spectrum of possible surface modifications to enhance polymers, ranging from simple topographical changes to creation of surface chemistries and coatings that are radically different from the bulk polymer. Furthermore plasma treatments are environmentally friendly and economical in regard to their use of materials.Plasma processing can be classified into at least four categories that often overlap. These are the following: (1) surface preparation by breakdown of surface oils and loose contaminates, (2) etching of new topographies, (3) surface activation by creation or grafting of new functional groups or chemically reactive, excited metastable species on the surface, and (4) deposition of monolithic, adherent surface coatings by polymerization of monomeric species on the surface. Key features of these processes will be briefly discussed, with a rudimentary introduction to the chemistries involved, as well as examples. Focus is placed on capacitively coupled radio-frequency (rf) plasmas (see Figure 1 in the article by Lieberman et al. in this issue of MRS Bulletin) since they are most commonly used in polymer treatment.

Screening rat mesenchymal stem cell attachment and differentiation on surface chemistries using plasma polymer gradients

2015 ◽  
Vol 11 ◽  
pp. 58-67 ◽  
Author(s):  
Peng-Yuan Wang ◽  
Lauren R. Clements ◽  
Helmut Thissen ◽  
Wei-Bor Tsai ◽  
Nicolas H. Voelcker
Keyword(s):  
Stem Cell ◽  
Mesenchymal Stem Cell ◽  
Cell Attachment ◽  
Plasma Polymer ◽  
Surface Chemistries

scholarly journals ZnO nanoparticle preparation route influences surface reactivity, dissolution and cytotoxicity

2018 ◽  
Vol 5 (2) ◽  
pp. 572-588 ◽  
Author(s):  
Catherine B. Anders ◽  
Josh E. Eixenberger ◽  
Nevil A. Franco ◽  
Rebecca J. Hermann ◽  
Katherine D. Rainey ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Stress Responses ◽  
Surface Reactivity ◽  
Zno Nanoparticle ◽  
Nanoparticle Preparation ◽  
Preparation Route ◽  
Surface Chemistries ◽  
Synthesis Approach ◽  
Oxidative Stress Responses ◽  
Unique Surface

The nZnO synthesis approach results in unique surface chemistries which influence agglomeration tendencies, dissolution potential, oxidative stress responses and NP-induced toxicity.

Designing Surface Chemistries for a High Density Chemical Microarray

2002 ◽  
pp. 452-454
Author(s):  
Sammy Datwani ◽  
Emilie Johnson ◽  
Sherri Biondi ◽  
Gloria Cheng ◽  
Jyotsna Iyer ◽  
...  
Keyword(s):  
High Density ◽  
Surface Chemistries

scholarly journals Graphene Templated DNA Arrays and Biotin-Streptavidin Sensitive Bio-Transistors Patterned by Dynamic Self-Assembly of Polymeric Films Confined within a Roll-on-Plate Geometry

Nanomaterials ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1468
Author(s):  
Sangheon Jeon ◽  
Jihye Lee ◽  
Rowoon Park ◽  
Jeonghwa Jeong ◽  
Min Chan Shin ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Self Assembly ◽  
Patterned Surfaces ◽  
Dna Arrays ◽  
Simple Strategy ◽  
Modified Dna ◽  
Highly Sensitive ◽  
Wide Range ◽  
Surface Chemistries ◽  
Plate Geometry

Patterning of surfaces with a simple strategy provides insights into the functional interfaces by suitable modification of the surface by novel techniques. Especially, highly ordered structural topographies and chemical features from the wide range of interfaces have been considered as important characteristics to understand the complex relationship between the surface chemistries and biological systems. Here, we report a simple fabrication method to create patterned surfaces over large areas using evaporative self-assembly that is designed to produce a sacrificial template and lithographic etch masks of polymeric stripe patterns, ranging from micrometer to nanoscale. By facilitating a roll-on-plate geometry, the periodically patterned surface structures formed by repetitive slip-stick motions were thoroughly examined to be used for the deposition of the Au nanoparticles decorated graphene oxide (i.e., AuNPs, ~21 nm) and the formation of conductive graphene channels. The fluorescently labeled thiol-modified DNA was applied on the patterned arrays of graphene oxide (GO)/AuNPs, and biotin-streptavidin sensitive devices built with graphene-based transistors (GFETs, effective mobility of ~320 cm2 V−1 s−1) were demonstrated as examples of the platform for the next-generation biosensors with the high sensing response up to ~1 nM of target analyte (i.e., streptavidin). Our strategy suggests that the stripe patterned arrays of polymer films as sacrificial templates can be a simple route to creating highly sensitive biointerfaces and highlighting the development of new chemically patterned surfaces composed of graphene-based nanomaterials.

Effect of Cleaning Chemistries on Cobalt: Surface Chemistries and Electrical Characterization

2018 ◽  
Vol 282 ◽  
pp. 263-267
Author(s):  
Quoc Toan Le ◽  
Els Kesters ◽  
Yuya Akanishi ◽  
Marleen H. van der Veen ◽  
Atsushi Mizutani ◽  
...  
Keyword(s):  
Dissolved Oxygen ◽  
Spectroscopic Ellipsometry ◽  
Photoelectron Spectroscopy ◽  
Good Yield ◽  
Electrical Characterization ◽  
Cobalt Hydroxide ◽  
Dissolved Oxygen Concentration ◽  
X Ray ◽  
Xps Characterization ◽  
Surface Chemistries

The etching characteristics of ECD cobalt in different cleaning solutions were characterized using four-point probe, spectroscopic ellipsometry, and X-ray photoelectron spectroscopy. 0.05% HF solution with saturated dissolved oxygen concentration was found to result in a substantial etch of ECD cobalt (~5 nm/min). In contrast, cleaning in the SC1 1:4:100 mixture and the formulated mixture led to a significantly lower etch amount, which could be explained by the formation of a passivation layer at the surface. XPS characterization indicated the formation of a cobalt hydroxide at the surface. The electrical evaluation of the DD structure carried out after cleaning using the formulated chemical mixture and subsequent metallization showed good yield for the 22 nm Kelvin vias, testifying an efficient cleaning of the Co surface at the via bottom.

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